Amazon.com: BIC 4 Color Ballpoint Pen, Medium Point (1.0mm), 4 Colors in 1 Set of Multicolor Pens, 3-Count Pack of Refillable Pens for Journaling and Organizing (Pen barrel color may vary) :
Celebrating 50 Years of BiC's 4 Colour Ballpen
Bic 4 Color Pen 50th Birthday Edition Review - YouTube
Iconic BIC 4-Color Pen Gets Updated With A Pencil And A Special Version Gets Purple Ink - SHOUTS
BiC: This is what the little ring on the end of the 4 colours pens are for
I haven't seen an anniversary BiC pen before and this was the only one on the rack at the grocery store. The rest were the typical 4-in-1. The barrel is a darker
Iconic BIC 4-Color Pen Gets Updated With A Pencil And A Special Version Gets Purple Ink - SHOUTS